This is a selection of onions, the overall build of them is the same and you can use them in a similar fashion  

This little elongated onion, is a chefs favorit for its clean not so sweet flavor 

Garlic is a different type of onion all together its skin and lairs dry up and hold the potent cloves of the garlic 

This is the different types and how you use them 

This is the most used onions and the are similar in every way apart from color 

Leeks are a tall standing onion like spring onions 

This is how you use them.

How to peel an onion.

This is how to cut and chop the common onion 

This is how to cut and finely chop the shallots onions

How to peel a garlic

You can cut or chop garlic in many different ways

This is how to grill leek; pay attention so that it does not burn.

This is the basic of braising vegetable 

Braising onion cooked

This is how to grill onions